Swanson Speedlite Series TO118 Square, 8 in L, 8 in W

The 8 in Speedlite® square is formed from lightweight, high-impact structural composite and is available in matte gray, high-visibility yellow and high-visibility orange. It's basically the same as the one and only Speed® square but is also great for use with siding and other delicate materials, since it won't mar soft finishes. Plus, its 8 in size means it's ideal for marking cuts in 8 in siding. Look for the Diamond®.